干旱区生态环境知识资源中心(Arid): 喀斯特石漠化地区土地利用方式对土壤团聚体稳定性及其有机碳分布特征的影响

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	喀斯特石漠化地区土地利用方式对土壤团聚体稳定性及其有机碳分布特征的影响
其他题名	Effects of Land Use Patterns on Soil Aggregate Stability and Organic Carbon Distribution in the Karst Rocky Desertification Area
	张艳; 刘彦伶; 李渝; 蒋太明; 白怡婧; 张萌; 张雅蓉; 黄兴成; 张文安
来源期刊	土壤通报
ISSN	0564-3945
出版年	2021
卷号	52 期号:6 页码:1308-1315
中文摘要	分析石漠化地区三种常见的土地利用方式(撂荒地,AL;玉米地,CF;果树地,FD)对土壤团聚体稳定性及有机碳分布的影响,为喀斯特石漠化地区地力提升提供理论依据。采集同一区域不同土地利用方式土壤样品,采用干筛法和湿筛法进行团聚体分级,对比分析不同土地利用方式下土壤养分含量及土壤团聚体的粒径分布、结构稳定性、有机碳的分布特征。结果表明,FD各土壤养分均高于AL和CF,其中FD的土壤有机碳含量分别较AL和CF显著提高25.45%和21.86%,全氮含量显著提高22.42%和19.76%。FD >5 mm机械性和水稳性团聚体组成均显著高于AL和CF,<0.25 mm的水稳性团聚体组成则显著低于AL和CF。不同土地利用方式 >0.25 mm团聚体组成(R0.25)、平均重量直径(MWD)和几何平均直径(GMD)均表现为FD >AL >CF,团聚体破坏率(PAD)和不稳定团粒指数(ELT)则表现出相反趋势。FD不同粒径团聚体有机碳含量分别较AL和CF提高了4.39% ~ 36.69%和8.11% ~ 27.51%,且 >5 mm粒径团聚体有机碳对土壤有机碳的贡献率分别较AL和CF显著提高了6.03%和9.64%,而 <0.25 mm粒径团聚体有机碳对土壤有机碳的贡献率则显著降低了46.02%和57.42%。相关分析表明土壤有机碳含量与MWD、GMD、R0.25呈显著正相关,土壤有机碳含量是影响土壤团聚体稳定性最重要的土壤养分指标。在喀斯特石漠化较严重地区,采取退耕还林可提高土壤养分和改善土壤团粒结构,促进喀斯特石漠化生态环境的改善。
英文摘要	The effects of three common land use patterns (abandoned land,Al;corn field,CF;fruit tree land,FD) on soil aggregate stability and organic carbon (C) distribution in rocky desertification area were analyzed,which will provide theoretical basis for farmland restoration and soil fertility improvement in karst rocky desertification area.Soil samples were collected from different land use patterns in the same area,and dry sieving method and wet sieving method were used for aggregate classification.The soil nutrient content,particle size distribution,structural stability and organic C distribution characteristics of soil aggregates under different land use patterns were compared and analyzed.The results showed that the soil nutrient indices of FD were higher than those of Al and CF.The soil organic C of FD was significantly increased by 25.45% and 21.86% compared with Al and CF,and the total nitrogen was significantly increased by 22.42% and 29.76%.The content of mechanical and water stable aggregates in FD >5 mm was significantly higher than that in Al and CF,while the content of water stable aggregates <0.25 mm was significantly lower than that of Al and CF.The aggregate content (R0.25),mean weight diameter (MWD) and geometric mean diameter (GMD) of >0.25 mm in different land use patterns were FD >AL >CF,while the aggregate failure rate (PAD) and unstable aggregate index (ELT) were opposite.Compared with Al and CF,the organic C content of FD aggregates with different particle sizes increased by 4.39% ~ 36.69% and 8.11% ~ 27.51% respectively,and the contribution rate of organic C of aggregates with particle size >5 mm to soil organic C significantly increased by 6.03% and 9.64% compared with Al and CF,while the contribution rate of organic C with particle size <0.25 mm decreased by 46.02% and 57.42%.Correlation analysis showed that soil organic C content was significantly positively correlated with MWD,GMD and R0.25,and soil organic C content was the most important soil nutrient index affecting soil aggregate stability.Returning farmland to forest in the areas with serious karst rocky desertification can improve soil nutrients,soil aggregate structure,and promote the improvement of ecological environment of karst rocky desertification.
中文关键词	喀斯特石漠化地区 ; 土地利用方式 ; 土壤团聚体 ; 稳定性 ; 土壤有机碳
英文关键词	Key worlds:Karst rocky desertification area Land use pattern Soil aggregate Stability Soil organic carbon
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:7109534
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377965
作者单位	张艳, 贵州省农业科学院土壤肥料研究所, 贵阳, 贵州 550006, 中国.; 白怡婧, 贵州省农业科学院土壤肥料研究所, 贵阳, 贵州 550006, 中国.; 刘彦伶, 贵州省农业科学院土壤肥料研究所;;农业部贵州耕地保育与农业环境科学观测实验站, ;;农业部贵州耕地保育与农业环境科学观测实验站, 贵阳;;贵阳, 贵州;;贵州 550006;;550006, 中国.; 李渝, 贵州省农业科学院土壤肥料研究所;;农业部贵州耕地保育与农业环境科学观测实验站, ;;农业部贵州耕地保育与农业环境科学观测实验站, 贵阳;;贵阳, 贵州;;贵州 550006;;550006, 中国.; 张萌, 贵州省农业科学院土壤肥料研究所;;农业部贵州耕地保育与农业环境科学观测实验站, ;;农业部贵州耕地保育与农业环境科学观测实验站, 贵阳;;贵阳, 贵州;;贵州 550006;;550006, 中国.; 张雅蓉, 贵州省农业科学院土壤肥料研究所;;农业部贵州耕地保育与农业环境科学观测实验站, ;;农业部贵州耕地保育与农业环境科学观测实验站, 贵阳;;贵阳, 贵州;;贵州 550006;;550006, 中国.; 黄兴成, 贵州省农业科学院土壤肥料研究所;;农业部贵州耕地保育与农业环境科学观测实验站, ;;农业部贵州耕地保育与农业环境科学观测实验站, 贵阳;;贵阳, 贵州;;贵州 550006;;550006, 中国.; 张文安, 贵州省农业科学院土壤肥料研究所;;农业部贵州耕地保育与农业环境科学观测实验站, ;;农业部贵州耕地保育与农业环境科学观测实验站, 贵阳;;贵阳, 贵州;;贵州 550006;;550006, 中国.; 蒋太明, 农业部贵州耕地保育与农业环境科学观测实验站;;贵州省农业科学院茶叶研究所, 农业部贵州耕地保育与农业环境科学观测实验站;;, 贵阳;;贵阳, 贵州;;贵州 550006;;550006, 中国.
推荐引用方式 GB/T 7714	张艳,刘彦伶,李渝,等. 喀斯特石漠化地区土地利用方式对土壤团聚体稳定性及其有机碳分布特征的影响[J],2021,52(6):1308-1315.
APA	张艳.,刘彦伶.,李渝.,蒋太明.,白怡婧.,...&张文安.(2021).喀斯特石漠化地区土地利用方式对土壤团聚体稳定性及其有机碳分布特征的影响.土壤通报,52(6),1308-1315.
MLA	张艳,et al."喀斯特石漠化地区土地利用方式对土壤团聚体稳定性及其有机碳分布特征的影响".土壤通报 52.6(2021):1308-1315.